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allocate material when more than one link scan exist

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This commit is contained in:
obdev
2023-04-13 09:01:57 +00:00
committed by ob-robot
parent 89be1d878e
commit 48c57d0564
7 changed files with 75 additions and 7 deletions
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18
src/sql/optimizer/ob_select_log_plan.cpp
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@ -3993,16 +3993,26 @@ int ObSelectLogPlan::generate_dblink_raw_plan()
//do nothing
} else if (OB_FAIL(allocate_link_scan_as_top(top))) {
LOG_WARN("failed to allocate link dml as top", K(ret));
} else {
top->set_dblink_id(dblink_id);
ObLogLinkScan *link_scan = static_cast<ObLogLinkScan *>(top);
if (OB_FAIL(link_scan->set_link_stmt(stmt))) {
LOG_WARN("failed to set link stmt", K(ret));
} else if (0 == dblink_id) {
link_scan->set_reverse_link(true);
}
}
if (OB_FAIL(ret)) {
// do nothing
} else if (optimizer_context_.has_multiple_link_stmt()
&& OB_FAIL(allocate_material_as_top(top))) {
LOG_WARN("allocate material above link scan failed", K(ret));
} else if (OB_FAIL(make_candidate_plans(top))) {
LOG_WARN("failed to make candidate plans", K(ret));
} else if (OB_FAIL(static_cast<ObLogLink *>(top)->set_link_stmt(stmt))) {
LOG_WARN("failed to set link stmt", K(ret));
} else {
top->mark_is_plan_root();
top->get_plan()->set_plan_root(top);
top->set_dblink_id(dblink_id);
if (0 == dblink_id) {
static_cast<ObLogLinkScan *>(top)->set_reverse_link(true);
// reset dblink info, to avoid affecting the next execution flow
query_ctx->get_query_hint_for_update().get_global_hint().reset_dblink_info_hint();
} else {